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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.0333
                           zlib security update
                              30 January 2020

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           zlib
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-9843 CVE-2016-9842 CVE-2016-9841
                   CVE-2016-9840  

Reference:         ESB-2020.0238

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2020/01/msg00030.html

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Package        : zlib
Version        : 1:1.2.8.dfsg-2+deb8u1
CVE ID         : CVE-2016-9840 CVE-2016-9841 CVE-2016-9842 CVE-2016-9843


Several issues have been found in zlib, a compression library.
They are basically about improper big-endian CRC calculation, improper 
left shift of negative integers and improper pointer arithmetic.


For Debian 8 "Jessie", these problems have been fixed in version
1:1.2.8.dfsg-2+deb8u1.

We recommend that you upgrade your zlib packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

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===========================================================================
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===========================================================================
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